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Canât say that Iâve heard anything about that- thatâs hilarious though and wish Iâd found one 
In terms of quantity, your item is likely pretty rare as those types of mistakes donât happen often.
In terms of value though, it wonât be more than what you paid for it, in most respects.
Misprinted/labeled/packaged items are generally of little interest to most collectors, given they prefer items to be as theyâre intended to be, and not factory mishaps.
Itâs a neat curiosity and a fun conversation piece, but it likely wonât ever attain any value beyond its retail price.
@TheTerrificToyman Have you seen the Keaton Batman from that series? Itâs pretty nifty, and is my favorite of the set.
Welcome to the community @Kryptomyght.63988! Please let the moderator team know if you need anything. 
I havenât- I didnât even realize these were a thing. I got Joker and Superman as little extras to a Xmas or Birthday gift not too long ago.
Lemme see if I can dig up a picture of him for yasâŚ
noodles about
Hereâs the whole setâŚ
âŚand a close-up of the Keaton Batman:
He doesnât look like Keaton and the cape is off-color, but the movie-accurate utility belt and the armored gloves and boots made up for it, I felt. Especially for being just $1.